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Finding the Fourth Proportional to 615,986.40, 922,424.40 and 491,570.40

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Solution

The fourth proportional to 615,986.40, 922,424.40 and 491,570.40 is: 736,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,986.40 : 922,424.40 = 491,570.40 : x
  2. Step 2: Convert to fraction form
    615,986.40/922,424.40 = 491,570.40/x
  3. Step 3: Cross multiply
    615,986.40x = 922,424.40 × 491,570.40
  4. Step 4: Simplify right side
    615,986.40x = 453,436,531,277.76
  5. Step 5: Solve for x
    x = 453,436,531,277.76/615,986.40
  6. Step 6: Final answer
    x = 736,114.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.